Arm support for a chair



FIG. 1 is a front perspective view of the arm support for a chair in a first position;

FIG. 2 is a side elevational view of the arm support in a second position;

FIG. 3 is a front elevational view of the arm support;

FIG. 4 is a rear elevational view of the arm support;

FIG. 5 is a top plan view of the arm support; and,

FIG. 6 is a bottom view of the arm support.

The broken lines shown are for environmental illustrative purposes only, and form no part of the claimed design. 

We claim the ornamental design for an arm support for a chair, as shown and described. 